Oscillating steam-engine



(No Model.) 2 Sheets-Sheet 1;

F. OLIVER. OSGIILLATING STEAM ENGINE. No. 467,766. Patented Jam-26,1892:.

EXAM 03 r v I i a I I m a u M I 4 129.5 Z0 2 P WITNESSES IWZWTOB F6 Iltom (No Model.) 2 Sheets-Sheet 2. P; OLIVER. OSGILLATING STEAM ENGINE.

Patented Jan. 26, 1892..

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[WEN 2'02 WM M Jiliiorney 5 v UNITED STATES PATENT OFFICE.

FRANK OLIVER, OF ECONOMY, PENNSYLVANIA.

OSCILLATING STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 467,766, dated January26, 1892.

Application filed June 18 1891. Serial No. 396.738. (No model.)

To all whom it may concern:

Be it known that I, FRANK OLIVER, a citizen of the United States,residing at Economy, in the county of Beaver andState of Pennsylvania,have invented certain new and useful Improvements in OscillatingSteam-Engines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the artto which it appertains to make and use thesame.

My invention relates to oscillating steamengines; and it consists ofcertain novel features herein described and claimed.

Reference is had to the accompanying drawings, wherein the same partsare indicated by the same letters.

Figure 1 represents a side elevation of the engine. Fig. 2 represents asection along the line :19 as of Fig. 1, looking to the left. Fig. 8represents a section through the plane, including the axis of thecylinder and that of the trunnions. Fig. 4 represents the guide for thevalve-stem to take the wear off the gland. Fig. 5 represents a sideelevation of the device for shifting the eccentric. Fig. 6 represents aview of the same, partly in section, along the axis of the shaft.

The frame A is mounted on the bed B and supports the hollow trunnions Cof the cylinder D.

I) is the steam-chest, which is either bolted to or cast integral withthe cylinder D. This steam-chest contains the ordinary slide-Valve E,connected to the valve-stem F. The ports (6' lead from the steam-chestto the cylinders, as usual, while the exhaust-port (Z communicates witha passage (Z which is contained in the shell of the cylinder beneath theribs D The steam entering the steam-chest from the pipe 0 and hollowtrunnion adjacent thereto passes into the cylinder through thesteamport, while the exhaust-steam passes through its port, theexhaust-port (Z the passage (1 in,

the shell of the cylinder, and leaves the opposite trunnion by the pipe0*.

The valve-rod F passes through the stuffing-boxf and guide G, and isattached atf' to the yoke F, which is connected by the rod F to theeccentric-strap The valve-rod is mounted on the opposite side of theoscillatg, each having rounded shoes g held firmly on the top of thepiston-head by screws 9 passing freely through holes 9 in the saidshoes. The outer ends of these pieces g and 9 come togethersnngly,forminga cylindrical hole 9 through which the valve-stem passes,surmounted by a cup-shaped cavity g for the reception of oil or otherlubricants. The screw-bolt g holds the two pieces g and g firmlytogether. Vhen it is desired to take out the gland f for any reason, bytaking out the bolt 9 and swinging the parts 9 and g back on the pivotsg the gland may be readily reached. 7

In order to provide for reversing, which will be necessary whenever theherein-described engine is adopted for use as a marine-engine and forthe various other applications of the engine in which reversing becomesdesirable, I have the devices illustrated in Figs. 5 and 6, wherein Frepresents the eccentric in the form of a hollow ring loosely inclosingthe shaft H, but set at some distance therefrom.

F represents a disk partially open to the rear and having a dovetailslot in the face thereof, in which the slide f engages. This slide iseither rigidly attached to or integral with the eccentric. The disk Fhas a h ubf keyed to the shaft H. A collar F moves longitudinally on theshaft lLbutisheld against turning by means of a stud or lug engaging inthe groove h in the shaft H. 011 one end of this collar F a loose collarF is fitted, held between the flanges f. To this loose collar F thehand-lever F with fixed pivot f is attached. The rod R, having the arm'2', is slotted at r, where it is pivoted to the slide f. At 0' it ispivoted to the hub f keyed on the shaft H, and at r to the rod R pivotedat r to the sliding collar F when the lever F is moved to the right thatthe sliding collar F will be forced to the left It will be seen and theconnecting-rod R will push back the arm '1- and throw up the slotted armr, which carries the slide f and eccentric F along with it. By movingthe lever F in the opposite direction the eccentric will be lowered orthe engine reversed. It will be seen that the lever F will move theeccentric irrespective of the position of the valve in the steamchest.

This device for shifting the eccentric will be claimed in a divisionalapplication.

Havingthus described myinvention, what I claim, and desire to secure byLetters Patent of the United States, is

1. In an oscillating steam-engine, the combination, with amain shaft, ofa cylinder having the two hollow trunnions and a steamchest andexhaust-passage connected to the said trunnions, a slide-valve workingin said steam-chest, a Valve-rod moving in suitable guides connected tosaid valve on the opposite side from the said shaft, a yoke inclosingthe said steam-chest connected to said valvestem, and an eccentric rodand strap connected to an eccentric on said shaft, with means forshifting said eccentric, substantially as described.

2. In an oscillating steam-engine, the combination, with the cylinder1), having ports (1, d, and d exhaust-passage d and hollow trunnions O,of the steam-chest D, a slide valve contained therein, the valve-rod F,connected to said slide-valve, the guide G, having two hinged armsbolted together, for said valve-rod, the yoke F, connected to saidvalverod, and the eccentric-rod, eccentric-strap, and eccentricconnected to said yoke, substantially as described.

In testimony whereof I affix my signature in presence of two witne ses.

- FRANK OLIVER.

NVitnesses:

H. FISOHERN, D. B. TURNER.

